Hey there @l.cummings,
Welcome to the Community and thanks for posting that great question here!
The dedicated sending domain idea is actually a good avenue to go on your end! I personally would highly consider the return on investment a Dedicated Sending Domain provides. The process of setting up a dedicated sending domain improves deliverability in the eyes of inbox providers since you will now send from your own designated domain. As such, your sender email address (i.e. from address) will match the domain you’re sending from. This means that your emails will no longer appear to be sent by a shared domain.
I have seen many Community members utilize Gmail as their choice for creating a business email and a dedicated sending domain. However, there are other ways to set it up as well.
In our documentation on How to Strengthen Your Sender Reputation, we also emphasize the benefits of having a dedicated sending domain. There are also some great community posts regarding this topic that I highly recommend reading!
Lastly, if you are seeing an issue with bounces after setting one up, we also have a resource explaining that as well!
Hope this helped!
Alex